rand() generate random number	Function
	SYNOPSIS DESCRIPTION PARAMETERS RETURN VALUES CONFORMANCE MULTITHREAD SAFETY LEVEL PORTING ISSUES AVAILABILITY SEE ALSO

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SYNOPSIS

#include <stdlib.h>

int rand(void);

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DESCRIPTION

The rand() function generates pseudo-random numbers with period 2^32 in the range from 0 to RAND_MAX. The function uses a seed value to generate the pseudo-random number. The seed has an initial value of 1 but it can be changed by calling srand().

rand() is not reentrant; see rand_r().

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PARAMETERS

None.

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RETURN VALUES

rand() returns a pseudo-random number between 0 and RAND_MAX.

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CONFORMANCE

ANSI/ISO 9899-1990.

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MULTITHREAD SAFETY LEVEL

Unsafe.

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PORTING ISSUES

None.

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AVAILABILITY

MKS Toolkit for Professional Developers
MKS Toolkit for Enterprise Developers
MKS Toolkit for Enterprise Developers 64-Bit Edition

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SEE ALSO

Functions:

rand_r(), random(), srand(), srandom()

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MKS Toolkit 9.2 Documentation Build 16.